One block tall pointed dripstone generates excessively

Note that I am using a texturepack to make pointed dripstone more visible in this screenshot.

Some large patches of pointed dripstone generate without any variation of height at all. Majority of the stalagmites are 1 block tall. Also I've only noticed this issue for patches of pointed dripstone on the ground (stalagmites), not for patches hanging form the ceiling(stalactites).
What I expected to happen is: Patches of pointed dripstone would generate stalagmites with varying height
To reproduce:
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/execute in minecraft:overworld run tp @s 5059.96 19.24 2604.13 -3011.00 20.85